libudev auto-detection... ()
/usr/local/linaro/arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-g++ -c -pipe -marm -mfpu=vfp -mtune=arm1176jzf-s -march=armv6zk -mabi=aapcs-linux -mfloat-abi=hard --sysroot=/Users/ze/raspi/sysroot -O2 -Wall -W -fPIC  -I. -I../../../mkspecs/devices/linux-rasp-pi-g++ -o libudev.o libudev.cpp
libudev.cpp:34:21: fatal error: libudev.h: No such file or directory
 #include <libudev.h>
                     ^
compilation terminated.
make: *** [libudev.o] Error 1
libudev disabled.